Multi-code OBD2 diagnosis
Enter all the codes your scanner showed, not just the first one. We give you the overall severity, whether you can keep driving, the order in which to check them and how they relate to each other.
Summary
- Overall severity
- Low
- Can I keep driving?
- Yes, no immediate risk
- Estimated cost
- $30 to $300
- Codes analyzed
- 1 of 1
The order below is the recommended one: first the codes that can cause the others. After each repair, clear the codes and check which ones come back.
Order of inspection
P0449 Evaporative Emission Control System Vent Valve/Solenoid Circuit Low
The P0449 code means the electrical circuit of the vapor system vent valve is not responding the way the computer expects. The valve is mounted under the vehicle next to the canister, so dirt, moisture and insects explain a large share of cases. It often causes false leak codes, and you can keep driving while you sort it out.